Device for feeding and igniting in particular gasoline as fuel for a vaporizing burner of a heater

Abstract

A device for feeding and igniting in particular gasoline as fuel for the vaporizing burner of a heater, in particular a vehicle heater, is disclosed. The fuel evaporated from a porous body is mixed with combustion air and burned in a combustion chamber of the heater after being initially ignited by a glow plug. In order to simplify the design and improve the efficiency of the device, the glow plug is mounted in a pipe insulated from the outer wall of the combustion chamber and is radially surrounded by porous tubular body that projects beyond the free end of the glow plug into the combustion chamber. Combustion air is supplied in the radial direction to the porous body in the area of the free end of the glow plug and fuel is supplied in the radial direction to the opposite end of the porous body. The part of the porous body located outside the combustion chamber acts as a distributor and temporary reservoir when fuel is supplied.

I claim: 
     
       1. A device for supplying and igniting fuel for a vaporizing burner of a heater, comprising: a tubular porous body;   a combustion chamber of the heater;   a pin-type glow plug;   a socket disposed adjacent to said combustion chamber, said pin-type glow plug being mounted in said socket arranged insulated from said combustion chamber and being radially surrounded by said tubular porous body, said tubular porous body extending into said combustion chamber beyond a free end of said pin-type glow plug;   a radial combustion air feed, for feeding combustion air radially in an area of said free end of said pin-type glow plug; and   a radial fuel feed, for feeding fuel radially to said porous body at an end of said pin-type glow plug opposite said free end.   
     
     
       2. The device in accordance with claim 1, further comprising: a porous combustion chamber lining present in said combustion chamber at least in an area in which said porous body opens into a combustion chamber wall said tubular porous body contacting said porous combustion chamber lining. 
     
     
       3. The device in accordance with claim 1, wherein said combustion chamber is designed tubularly with a lateral pocket shaped in it axially in parallel for accommodating said pin-type glow plug, in which said porous body surrounding said pin-type glow plug contacts a wall of the said pocket in a heat-transferring manner. 
     
     
       4. The device in accordance with claim 1, wherein said combustion chamber lining has a closed ring shape covering said pocket and has an opening in an area of said free end of said porous body surrounding said pin-type glow plug. 
     
     
       5. The device in accordance with claim 1, wherein said socket is plugged into a hole of said bottom part of said heater, said bottom part being attached by means of a flange and secured axially via a clamp, said clamp being placed radially into a groove of said socket and being screwed to said bottom part at an adjacent point. 
     
     
       6. The device in accordance with claim 1, wherein said socket is secured against rotation by being in positive-locking contact with a projection of said bottom part. 
     
     
       7. The device in accordance with claim 1, wherein said socket is formed of a material having poor thermal conductivity. 
     
     
       8. The device in accordance with claim 1, wherein said socket is formed of a material having poor thermal conductivity and is separated from said bottom part by an insulating material. 
     
     
       9. The device in accordance with claim 1, wherein said socket is separated from said bottom part by an insulating material. 
     
     
       10. A device for supplying and igniting gasoline as a fuel for a vaporizing burner of a heater, comprising: a porous body for receiving gasoline;   a combustion chamber of the heater;   a pin-type glow plug;   a socket disposed adjacent to said combustion chamber, said pin-type glow plug being mounted in said socket arranged insulated from said combustion chamber and being radially surrounded by said tubular porous body, said tubular porous body extending into said combustion chamber beyond a free end of said pin-type glow plug;   a radial combustion air feed, for feeding combustion air radially in an area of said free end of said pin-type glow plug; and   a radial gasoline feed, for feeding gasoline radially to said porous body at an end of said pin-type glow plug opposite said free end, whereby gasoline is evaporated from said porous body and mixed with combustion air and is burned in said combustion chamber of the heater after an initial ignition by said pin-type glow plug.